Safety connecting link



Feb. 8, 1927.

O C. STAPLES I SAFETY CONNECTING LINK Filed June 28, 1926 improvement onthe invention set forthflin Patented Feb. 8, 192 7. i

QSQAB ue-LE or u ilisat n-Anoma- I new com ents Application filed June28-, 192e,. SeriallNo. 118,970

7 This invention relates to new anduse f'ul improvements in safetyconnecting links.

The invent-ionhas particularly to do with the linkswhich are used to;connect the rods extending from pumping powers to pump jacks as'used 1nthe oil fields, and isian vember'17, 1925.

The object of the invention is to provide a hook having an eye at oneend whereby it may be permanently connected to the jack rod and a hookat the other end for connecting with the power rod, together y Le ter Paen #1.,5619 issued N with a hand grip located intermediate its ends forsafely handling thelink.

Another important object of the invention is to provide a guard adjacentthe hand grip and opposite the connecting hook for preventing injury tothe operators hand by contact with the rod. 1

Another object of the invention is to provide certain reinforcements andthus pre clude breakage and distortion, which is quite common with thelinks now in general use.

A construction designed to carry out the invention will. be hereinafterdescribed,to-

. gether with other features of the invention.

The invention will be more readily understood from a reading of thefollowing specification and by reference to the accompanying drawings,in which an example of the invention is shown and wherein:

Fig. 1 is a view in elevation showing a link constructed in accordancewith my invention, and connecting a pumping rod with a jack rod,

Fig. 2 is a side elevation of the said link,

Fig. 3 is ,a cross-sectional'view taken on the line 3-'3 of Fig. 2, andj Fig. 4 is a cross-sectional view taken on the line 4% of Fig. 2.

In the drawings the numeral 10 designates a metal connecting link whichmay be cast, forged or otherwise formed from suiting 16" between theshank andtheg-rip ex tending longitudinal of the link. i 1

A- ieinf rcingfin 917" extends upwardly from the grip 1:5 and terminatesin aguardlug 18- pro jecting outwardly at the forward end of the grip.Thefront side of the'lug;

.60 ne'etinghook19 is provided at the outerend",

is cu-rved'downwar dto the neck 14'. A coin ofthe neckwhile a throw-offhook '20 curved downwardly from the inner end of i the neck so as tounderlie the shank. A reinforcing Web 21 connects the hooks and extendsacross theouter end of the neck.

In using the hook the eye 11 is attached to the coupling A of thepumpja-ckrod' B. -The operator grasps the link by the hand grip 15,passing his fingers through the opening 16 and placing his thumbagainst'the guard lug 18. With the link thus held and his hand and thumbprotected, he places the disconnecting block (not shown) between thecoupling A and,

the knock-off post E. The link will; then drop off inthe usual way. Toconnect the link the operator grasps the hand grip 15 with one hand andengages the hook 1-9 in the coupling C of the power rod D.

Where the link is used with an anchor or a hook-ofl? the operator graspsthe grip 15 and engages the hook 20 in the clamp of the hook-0E rod (notshown), whereby the hook f19 will disengage on the return reciprocationof the'irod D and'drop off.

When the hook 19 is engaged with the couf pling C the hook-off rod willdrop off the hook 20. l

It will be seen that the lug 18 will pre vent injury to the operatorshand by engaging the couplingC in case the rod B moves forwardly to thispoint. The web 21 gives the hook structure sufficient strength and yetreduces the weight to a minimum.

Various changes in the size and "shape of the different parts, as wellas modifications and alterations, may be made within the scope of theappended claims. 1

What I claim,"is; 1 1. A safety connecting a link for pump lOO rods,comprising, a link body having a connecting eye at one end and acoupling hook at its opposite end, and a hand grip between 05 the eyeand the hook, there being a finger opening under the hand grip.

2; A safety connecting link for pump rods comprising, a link body havinga connecting eye at one end and a coupling hook at its opposite end, ahand grip between the eye and the hook, there being a finger openingunder the hand grip, and aguardlug at the hook end of the hand grip.

3. A safety connecting link for pumping rods comprising, a longitudinalshank having a ring with an eye at one end and a connecting hook at theother end, a hand grip arched over the shank and providing a fingeropening therebetWeen, and a guard lug at the hook end of the hand grip.

4.1 A safety connecting link for pumping rods comprising, a longitudinalshank having a ring with an eye at one end and a connecting hook at theother end, a hand grip archedover the shank and providing a finforcingfin extending along the outer side pf the hand grip and merged into theguard 5. A safety connecting link for pumping rods comprising, alongitudinal shank having a ring with an eye at one end and a neck atits opposite end, a connecting hook at the outer end of the neck, athrow-off hook at the inner end of the neck, a reinforcing web extendingoutwardly from the neck and connecting the hooks, a curved hand griparched over the shank and providing a finger' opening therebetween, aguard lug extending outwardly from the grip and curved downwardly to theneck, and a reinforcing fin extending along the grip and merged into thelug. g In testimony whereof I aflix my signature.

OSCAR, o. STAPLES.

